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| 5390 | The benefits of ZTE to standard MRI practice | |
| Helen L Prince1 | ||
1MRI, CUH Addenbrookes UK, Newmarket, United Kingdom |
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In theory a ZTE or Zero Echo Time could visualise and benefit MRI imaging of any joint. It can be used in a wide spectrum of developmental, traumatic, inflammatory, rheumatologic and oncologic conditions. It may remove the need for CT with detailed depiction of bone anatomy. It opens the doors for more MRI based research into many musculoskeletal conditions and morphometric analysis. One MRI examination with a ZTE sequence allows cross referencing of sequences aiding diagnosis, prognostication and surgical guidance in soft tissue and bone with precise measurements that involve bony landmarks. |
| 5391 | Clinical Impact of Single Breath Hold Contrast Enhanced 4D-MRA with High Temporal and Spatial Resolution without k-space Data Sharing Techniques | |
| Tatsunori Saho1, Johshin Matsuzaki1, Chihiro Hayashida1, and Takahiro Kubota1 | ||
1Dept. of Radiological technology, Kokura memorial hospital, Kitakyushu, Japan |
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For evaluation of arteriovenous malformations, contrast-enhanced 4D-MRA is useful to detect feeding arteries and draining veins. However, with the Keyhole technique, contamination of different phases is a major problem. We solved this problem by applying parallel imaging with compressed sensing to contrast-enhanced 4D-MRA(CS-4D-MRA). CS-4D-MRA was able to acquire images without contamination of the arterial phase with echo signals from the venous phase. It also had high temporal and spatial resolution, and was able to clearly visualize the feeder and the drainer. |
| 5392 | Diffusion imaging: multi-shell DTI on a whole-body 3T scanner versus a head-only MAGNUS 3T for traumatic brain injury evaluation | |
| Gail H Kohls1,2, Herman Douglas Morris1,2, Maureen N Hood1,2, James Kevin DeMarco1,2, and Thomas KF Foo1,3 | ||
1Radiology & Radiological Sciences, USUHS, Bethesda, MD, United States, 2Radiology, Walter Reed National Military Medical Center, Bethesda, MD, United States, 3GE Research Center, Niskayuna, NY, United States |
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Diffusion imaging has progressed beyond standard DTI to mutli-shell and non-Gaussian techniques to improve upon the sensitivity of detecting multiple fiber angles in a voxel. Newer high-gradient scanners are able to further expand the capabilities of these advanced DTI sequences to help us improve upon the detection of complex fiber tracks in voxels, which is important in the evaluation and treatment of traumatic brain injury. These new technologies hold promise to improve our understanding of the movement of microcellular fluids. |
| 5393 | RA synovitis segmentation based on unsupervised learning and TIC signal data on DCE-MRI | |
| YiJun Mao1,2, Wanxuan Fang2, Yujie An2, Hiroyuki Sugimori1, Shinji Kiuch3, and Tamotsu Kamishima1 | ||
1Faculty of Health Sciences, Hokkaido University, Sapporo, Japan, Sapporo, Japan, 2Graduate School of Health Sciences, Hokkaido University, Sapporo, Japan, Sapporo, Japan, 3AIC Yaesu Clinic, Tokyo, Japan, Tokyo, Japan |
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Keywords: Rheumatoid Arthritis, DSC & DCE Perfusion The volume of synovitis change is one of the most important pathological features of rheumatoid arthritis. By quantitative analysis of the enhancement of synovitis, we can define the degree of the disease, and determine the treatment and diagnosis. Considering the time-consuming of manual outlining and visual assessment, this study uses machine learning methods to conduct quantitative analysis of TIC, and proposes an unsupervised learning method with excellent results, which is expected to be an alternative for the gold-standard manual synovitis contour outlining. |
| 5394 | Technologist Assessment of a Realtime Motion Monitoring System for fMRI Exams | |
| Kristina M. Pelkola1,2, Norman Farrar1, Alyssa Ailion3, Tess Wallace1,2, Onur Afacan1,2, Yao Sui1,2, and Simon K. Warfield1,2 | ||
1Radiology, Boston Children's Hospital, Boston, MA, United States, 2Computational Radiology Laboratory, Boston Children's Hospital, Boston, MA, United States, 3Neurology, Boston Children's Hospital, Boston, MA, United States |
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Visit any magnetic resonance imaging (MRI) facility, and all will agree that patient motion is an ongoing matter. This holds particularly true for pediatric facilities performing functional MRI (fMRI) exams. During fMRI exams, motion artifacts are subtle and contribute to data corruption which is not discovered until the data is analyzed. To enable the technologist to intervene when motion occurs, a real-time motion monitoring system “Slice Localization Integrated MRI Monitoring” (SLIMM) was established to detect motion and reduce the amount of scan time necessary while simultaneously increasing the quality of data collected. |
| 5395 | Evaluation of T1 relaxation time measurement using magnetic resonance spectroscopy unobstructed by the presence of fat: A liver phantom study. | |
| Makoto Suzuki1, Tatsyuya Hayashi2, Kazutaka Nashiki1, Hidemichi Kawata1, Shuji Nagata3, and Toshi Abe3 | ||
1Department of Radiological technology, Kurume University Hospital, Kurume, Japan, 2Department of Radiological Technology, Faculty of Medical Technology, Teikyo University, Tokyo, Japan, 3Department of Radiology, Kurume University School of Medicine, Kurume, Japan |
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We investigated the usefulness of magnetic resonance spectroscopy (MRS) for water T1 relaxation time independent on the presence of fat in the liver phantom. Then,T1 relaxation time measurements were performed using inversion recovery-spin echo, modified look locker, variable flip angle, and MRS on a 3T-MRI system. T1 relaxation time measurement by the MRS water signal is less affected by the presence of fat and more accurate than the other methods. This technique does not use special research sequences and can be realized on clinical MRI scanner where MRS can be performed. |
| 5396 | Predictors of long-term disability in MS patients using routine MRI data: a 15-year retrospective study | |
| Amjad Ibrahim Altokhis1, Abdulmajeed Alotaibi2, Paul Morgan2, and Radu Tanasescu3 | ||
1Clinical Neurology, University of Nottingham, Nottingham, United Kingdom, 2University of Nottingham, Nottingham, United Kingdom, 3University of nottingham, Nottingham, United Kingdom |
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MRI disability predictors in Multiple Sclerosis using routine MRI data: a 15-year longtudinal study |
| 5397 | Comparison of 3D VANE XD Technique in T1 weighted images of Liver MRI with free-breathing technique as the Radial percentage parameter changes | |
| Hun-Yeol Shin1, Jae-Yun Jeong1, Seong-Bong Cho1, and Chang-Min Dae1 | ||
1Radiology, Seoul National University Bundang Hospital, Seoul, Korea, Republic of |
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Liver examination with MRI has greater diagnostic value than other tests and is one of the more frequent examinations.[1,2] However, the ability to obtain images with good diagnostic value only when the patient breathes constantly.[3] A non-Cartesian Radial method for the collection of K-Space data enables examinations with free breathing differently. 3D VANE XD technique can be applied with mDIXON, a technique with high SNR and excellent fat suppression.[4] Therefore, the difference in Radial percentage, the parameter that most effects motion artifacts in T1 3D VANE XD and 3D-FFE techniques were compared and optimal time versus efficiency value were compared. |
| 5398 | The application of MR perfusion and diffusion combined with tumor marker diagnosis for the identification of benign and malignant ovarian tumors | |
| Chi Zhang1, Hongying Li1, Xin Hu1, Jinsong Bai1, Haitao Zhang1, Kang Xiao1, Kai Guo1, and Guohua Zhang1 | ||
1HanZhong People's Hospital, Hanzhong, China |
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Ovarian tumors are multifaceted tumors of the female reproductive system, of which early diagnosis and timely treatment of ovarian tumors is particularly important. In this study, we investigated the efficacy of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), apparent diffusion coefficient (ADC), serum CA125, human epididymal secretory protein (HE4) and their combined application in the differential diagnosis of benign and malignant ovarian tumors and explored the best method to be used in the diagnosis of ovarian tumors. |
| 5399 | Improving Visualization of Cervix in MRI with Sterile Surgical Lubricant | |
| Stephan Jordan1, Rebecca Rakow-Penner1, Alex Schlein1, Elin Lundstrom1,2,3, Summer Batasin1, and Stephane Loubrie4 | ||
1Radiology, UCSD, La Jolla, CA, United States, 2Department of Surgical Sciences, Uppsala University, Uppsala, Sweden, 3Center for Medical Imaging, Uppsala University Hospital, Uppsala, Sweden, 4UCSD, La Jolla, CA, United States |
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MRI is recommended by FIGO for staging of cervical cancer, and thus appropriate visualization of the vaginal vault and cervix is important for accurate staging. MRI has superior soft tissue contrast compared to other imaging modalities. However, when the vaginal vault is decompressed or the prescription angle is off axis, the utility of MRI becomes limited in evaluating cervical cancer. In this abstract, we explore the use of sterile water-based surgical lubricant as a tool to improve visualization of the cervix and associated structures during MRI. |
| 5400 | Longitudinal Clinical Study of Patients with Iron Rim Lesions in Multiple Sclerosis | |
| Amjad Ibrahim Altokhis1,2, Aimee Hibbert1, Christopher Allen3, Olivier Mougin3, Abdulmajeed Alotaibi3, Su-Yin Lim Lim4, Cris Constantinescu5, Rasha Abdel-Fahim6, Nikos Evangelou3, and Amjad Altokhis7 | ||
1Clinical Neurology, University of Nottingham, Nottingham, United Kingdom, 2Princess Nourah bint abdulrahman University, Riyadh, Saudi Arabia, 3University of Nottingham, Nottingham, United Kingdom, 4School of Medicine, Faculty of Health and Medical Sciences, Taylor’s University, Taylor's, Malaysia, 5Department of Neurology, Cooper Neurological Institute, Cooper Neurological Institut, Camden, PA, United States, 6Queen's Medical Centre, Nottingham, United Kingdom, 7Clinical Neurology, University of nottingham, Nottingham, United Kingdom |
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Iron rim lesions in Multiple Sclerosis disability |
| 5401 | Magnetic Resonance Imaging as a Prognostic Disability biomarker in C Multiple Sclerosis: A Systematic Review and Meta-Analysis | |
| Amjad Ibrahim Altokhis1, Abrar Alamrani2, Abdulmajeed Alotaibi3, Anna Podlasek4, and Amjad Altokhis5 | ||
1Clinical Neurology, University of Nottingham, Nottingham, United Kingdom, 2Faculty of Health, York University, Toronto, ON, Canada, 3University of Nottingham, Nottingham, United Kingdom, 4anna.podlasek@nottingham.ac.uk, Nottingham, United Kingdom, 5Clinical Neurology, University of nottingham, Nottingham, United Kingdom |
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Imaging biomarker for disability in Multiple Sclerosis |
| 5402 | The Imaging Technique and Clinical Usefulness of Super Rapid Phase Contrast Angiography for Stroke Patients. | |
| Daisuke Oura1, Riku Ihara2, Takumi Yokohama2, Yoshimasa Niiya3, Koji Furukawa3, Masayuki Gekka3, and Hiroyuki Sugimori4 | ||
1Graduate School of Health Sciences, Hokkaido University, Sapporo, Japan, 2Radiology, Otaru General Hospital, Otaru, Japan, 3Neurosurgery, Otaru General Hospital, Otaru, Japan, 4Faculty of Health Sciences, Hokkaido University, Sapporo, Japan |
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We offer super rapid phase contrast angiography (PCA) with a 60-second scan. This sequence greatly contributes to managing stroke patients compared with a conventional technique such as time-of-flight MRA. Parallel imaging and optimized voxel size reduce scan time as possible. Tilted optimized non-saturating excitation enhanced the depiction of the distal arteries in transverse acquisition PCA. Super rapid PCA overcomes motion artifacts due to short scan time and the shortest repetition time such as under 7 ms. Moreover, we obtain both MRA and black blood images as a subtraction image between the magnitude image and the MRA image. |
| 5403 | Incremental value of right ventricle function and T2* Mapping for judging the occurrence and development of cirrhotic cardiomyopathy in Rabbits | |
| Xinai Zhang1, Wanyin Qi1, Zhengyuan Xiao1, Xiaoyong Zhang2, and Jing Chen1 | ||
1The Affiliated Hospital of Southwest Medical University, Luzhou, China, 2Philips Healthcare, Chengdu, China |
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This study analyzed the T2* mapping sequence and ventricular function parameters to assess cardiac injury in early cirrhotic cardiomyopathy (CCM) in a rabbit model. At the 2ed week, the ejection fraction (EF) of right ventricle (RV) decreased and the T2* value of 10th segment for LV increased significantly. The liver showed mild iron deposition at the 4th. T2* value of the 10th segment was negatively correlated with that of liver. Suggesting the iron deposition in CCM were not synchronous. Finding the T2* mapping combine right ventricle function for evaluating the occurrence and development of cardiac and liver injury with CCM. |
| 5404 | Application of diffusion-weighted imaging of fast spin echo sequences based on compressed sensing in nasopharyngeal imaging | |
| wang shuai1 | ||
1Department of Diagnostic Radiology, Xijing Hospital, Air Force Medical University, Xi'an, China |
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There are two imaging options for nasopharyngeal DWI, one is EPI self-selected echo sequence, and the other is fast spin echo sequence. The two sequences are completely different in the way of reading signals, and each has its own advantages and disadvantages. Traditional EPI imaging has high distortion, and its advantages are fast scanning speed, while TSE sequence has small deformation, but it takes a long time. It takes nearly 4 minutes to scan a complete nasopharynx. In view of the long scanning time and distortion, we put forward two questions. The first question is how to shorten the imaging time while ensuring the image quality; the second question is what is the optimal compression factor for nasopharynx? |
| 5405 | Is Veterinary MRI feasible in a human facility? | |
| Shiami Delina Luchow1 and Saad Ramadan2 | ||
1MRI, Hunter Medical Research Institute/University of Newcastle, New Lambton Heights, Australia, 2HMRI Imaging Centre, Hunter Medical Research Institute/University of Newcastle, New Lambton Heights, Australia |
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Magnetic resonance imaging is continuing to grow for clinical diagnosis in veterinary practice. Although MRI is the gold standard for imaging the central nervous system and musculoskeletal pathology in animals, the use of MRI is limited due to the difficulty in accessing and the higher running cost. It is a limited resource disadvantaging many vet animals and their owners of care and cost. Is it feasible for a human MRI facility to image animals? This paper discusses how this was achieved at the Hunter Medical Research Institute Imaging Centre, Newcastle, Australia, and the safety procedures that were necessary for approval. |
| 5406 | Radomics Model and Deep Learning Model Based on T1WI Image for Acute Lymphocytic Leukemia Identification | |
| Ting Yi1, Hui Tang2, Yuanbin Chen2, Qifang Cai1, Huiting Zhang3, Weian Wei1, and Ke Jin1 | ||
1Hunan Children's Hospital, Changsha, China, 2Fuzhou University, Fuzhou, China, 3MR Scientific Marketing, Siemens Healthineers, Guangzhou, China |
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This study investigated the feasibility of radomics model and deep learning model Based on T1WI image for acute lymphocytic leukemia identification. The results showed that both radomics model and deep learning model can effectively distinct ALL children and normal children. And radomic model is better. |
| 5407 | Cardiovascular magnetic resonance in the evaluation of congenitally corrected transposition of the great arteries | |
| Jose Ngombo-Kimbongila 1, Petronella Samuels2, Morne Kahts2, Stephen Jermy2, Sulaiman Moosa3, Blanche Cupido4, and Ntobeko Ntusi4,5 | ||
1Department of Radiology, Groote Schuur Hospital, Cape Town, South Africa, 2Cape Universities Body Imaging Centre, University of Cape Town, Cape Town, South Africa, 3Department of Radiation Medicine, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa, 4Division of Cardiology, Department of Medicine, University of Cape Town, Cape Town, South Africa, 5Cape Heart Institute, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa |
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Congenitally corrected transposition of the great arteries (ccTGA), is a rare cardiac anomaly (occurring in less than 1% of all congenital heart diseases) characterised by atrio-ventricular and ventricular-arterial discordance. We report on a 13-year-old female with situs inversus totalis, ccTGA, peri-membranous VSD, and sub-PS presenting with worsening fatigue on physical exertion, excessive sweating, and intermittent palpitations not associated with physical activity. Echocardiography was used in diagnosis. CMR revealed mild systolic impairment (ejection fraction, EF 55%) of the systemic ventricle (morphologic RV), a perimembranous VSD, flattening of the interventricular septum in systole and diastole, indicative of pressure and volume overload, respectively.
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| 5408 | Evaluation the intramedullary severity and prognosis of early MRI in adult cervical spinal cord injury without radiologic abnormalities | |
| Yuan Liu1, Peng Sun2, and Xiangchuang Kong1 | ||
1Department of Radiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, 2Philips Healthcare, Beijing, China |
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The mpMRI biomarkers could be insightful for pathogenesis and prognosis in early-stage SCIWORA. |
| 5409 | Application of T1 radial vibe sequence in fetal central nervous system | |
| TIAN JIAN1 | ||
1XiJing Hospital, XI'AN, China |
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Application of T1 radial vibe sequence in fetal central nervous system |
| 5410 | Phenotypic characterisation of multifocal cardiovascular involvement in Takayasu arteritis with cardiovascular magnetic resonance | |
| Mariaan Jaftha1, Petronella Samuels2, Morne Kahts1, Stephen Jermy2, Tasnim Bana3, and Ntobeko Ntusi1,4,5 | ||
1Cape University Body Imaging Centre, University Cape Town, Cape Town, South Africa, 2Cape University Body Imaging Centre, CUBIC University Cape Town, Cape Town, South Africa, 3Division of Cardiology,Department of Medicine,University of Cape Town, University of Cape Town, Cape Town, South Africa, 4Division of Cardiology,Department of Medicine,University of Cape Town, University Cape Town, Cape Town, South Africa, 5Cape Heart Institute,Faculty of Health Sciences, University Cape Town, Cape Town, South Africa |
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Takayasu arteritis (TA) is an uncommon inflammatory disease primarily affecting the aorta and its main branches. It is more common in females (80-90% of cases) and occurs between the ages of 10 and 40 years. We report on a young male patient diagnosed with TA at age 16 years. CMR showed progressive aneurysmal dilatation of the aorta compressing the trachea, left main bronchus, and left lung. Both ventricles showed mild decrease in function (LVEF- 45% and RVEF – 51%). CMR played an important role in disease monitoring and guided patient management. |
| 5411 | The potential role of FT - CMR for detecting left ventricular dysfunction in patients with PSP: a case control study | |
| Pengfei Peng1, Xun Yue1, jia yu sun1, and Pengfei Peng1 | ||
1Radiology, West China Hospital, Sichuan University,, Chengdu, China |
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The potential role of feature tracking - CMR for detecting left ventricular dysfunction in patients with PSP |
| 5412 | Dog breed size versus brain size and its inferences, and canine pathology case studies | |
| Shiami Delina Luchow1 | ||
1MRI, Hunter Medical Research Institute/University of Newcastle, New Lambton Heights, Australia |
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Colloquially intelligence is correlated to brain size. Although not accurate in humans, is this true in dogs? Dogs are diverse in shapes and sizes and are bred for their unique abilities and behavioural characteristics. However, during clinical MRI examinations, it was clear that although the body mass ranged from approximately 1kg to over 100kg in different breeds, the brain size did not vary drastically. This study will analyse the neurocephalic index of different breeds of dogs to evaluate if this correlates with the dog breeds’ unique abilities. |
| 5413 | The conspicuity of inner ear membranous labyrinth anatomy using 3D FLAIR without gadolinium contrast agent | |
| Zongrui Zhang1, Zhaohui Liu1, and Yantao Niu1 | ||
1Radiology, Beijing Tongren Hospital,Capital Medical University, Beijing, China |
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Optimized 3D-FLAIR imaging can visualize inner ear membranous labyrinth anatomy without gadolinium contrast agent,paving the way toward developing a simple and quick method for diagnosing Meniere’s disease. |
| 5414 | Role of Intracranial Vessel Wall (VW) MRI in Evaluating Luminal Pathologies. | |
| Hui Ping Oh1, Ei Nyein Ei2, and Soke Miang Chng2 | ||
1Neuroradiology, National Neuroscience Institute, Singapore, Singapore, 2National Neuroscience Institute, Singapore, Singapore |
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Intracranial vessel wall (VW) MRI is a state-of-art technology to evaluate vessel wall diseases. It requires high spatial and contrast-to-noise ratio (CNR) resolution as well as capability of blood and cerebrospinal fluid (CSF) suppression to visualize the arterial wall. Our vessel wall protocol including T2 -weighted, 3D time of flight (ToF) MR angiography, diffusion-weighted imaging (DWI), gradient echo imaging (GRE), high resolution post contrast 3D T1-weighted turbo spin echo (TSE) with motion-sensitized driven-equilibrium (MSDE) black blood sequence and post contrast 3D T1-weighted volumetric isotropic fast field echo (FFE) done within 30 minutes which is capable to show vessel wall diseases. |
| 5415 | Comparative evaluation of fiber number implementation of median nerve during wrist DTI technique : Neutral vs Superman position | |
| Seong-Bong Cho1 and Jae-Yun Jeong1 | ||
1radiology, Seoul National University Bundang hospital, Gyeonggi-do, Korea, Republic of |
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To find out whether this change in position affects the actual fiber tracking, we compared the number of fiber implementations in the median nerve in accordance to neutral and superman position. In 12 of the 14 cases, the superman position produced more fibers than in the neutral position. The reason for this thought is due to the fact that the wrist in the superman position is closer to the isocenter of the magnetic field. Other parameters may be important to optimize the images of wrist DTI, however positioning of the wrist should be considered first. |
| 5416 | Acoustic Noise Reduction in MRI and Utilizing Machine Learning | |
| Ian David Langenfeld RT.(R)(MR)(MRSO)1, Jenna Kleinow RT.(R)(MR)(MRSO)1, Brian Burkett M.D., M.P.H.1, Paul Farnsworth D.O.1, Garima Suman, M.D. 1, Steven Messina, M.D.1, and Joel Felmlee Ph.D.1 | ||
1Radiology, Mayo Clinic, Rochester, MN, United States |
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This study assesses the use of acoustic noise reduction (ANR) techniques as well as utilizing machine learning in conjunction with ANR, in order to preserve image quality and limit acquisition time. The standard sequences in a brain without contrast exam were tested to determine decibel (dBA) level, image quality, as well as the scanned volunteers' semiquantitative "loudness" scores. |
| 5417 | The position dependence of the apparent diffusion coefficient; signal-to-noise ratio vs B1 map | |
| YASUO TAKATSU1,2, Masafumi Nakamura2,3, Yuichi Suzuki4, and Tosiaki Miyati2 | ||
1Molecular Imaging, School of Medical Sciences, Fujita Health University, Toyoake, Japan, 2Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan, 3Department of Radiology, Otsu City Hospital, Otsu, Japan, 4Department of Radiology, The University of Tokyo Hospital, Tokyo, Japan |
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The position dependence of the ADC in magnetic resonance imaging (MRI) by EPI- and TSE-DWI was assessed using phantoms based on the relationship between SNR and B1 maps. ADC decreased with distance from the center of the magnetic field for both EPI-DWI and TSE-DWI. The Pearson correlation coefficient between ADC and FA was strong and more significant than between ADC and SNR. ADC depends on the slice position and decreases with an increase in distance from the magnetic field center. Caution should be taken when comparing and quantitatively evaluating the ADC at sites shifted in the long-axis direction. |
| 5418 | Quantitative assessment of anterior talofibular ligament quality in chronic ankle instability using T2* relaxation time | |
| Yoshihiro Akatsuka1, Atsushi Teramoto2, Yasutaka Murahashi2, Katsunori Takahashi2, Rui Imamura1, Tomoaki Kamiya2, and Kota Watanabe3 | ||
1Division of Radiology and Nuclear Medicine, Sapporo Medical University Hospital, Sapporo, Japan, 2Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan, 3Second Division of Physical Therapy, Sapporo Medical University School of Health Sciences, Sapporo, Japan |
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This study investigated the feasibility of quantitative assessment of anterior talofibular ligament (ATFL) quality in chronic ankle instability (CAI) using T2* relaxation time. A prediction equation for the normal ATFL reference value was calculated in healthy volunteers. The ratio between the normal reference value and the patient's T2* value showed a significant positive correlation with the talar tilt angle on stress radiograph. There was also increasing trend in T2* values for poor ligament quality in the arthroscopic findings. T2* relaxation times are promising for quantitatively assessing ATFL quality preoperatively. |
| 5419 | Comparing Dual Shimming with Average Single Shimming on Fat Suppression Techniques | |
| Vahid Ravanfar1, Heather Daniel1, Emma Bahrros1, Rupsa Bhattacharjee1, Maya Aslam1, Patrick D. Koon2, Mehdi Khalighi3, and Dr. Matthew Bucknor1 | ||
1Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, 2GE Healthcare, Waukesha, WI, United States, 3Rad/PET/MRI Metabolic Service Center, Stanford University, Palo Alto, CA, United States |
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When acquiring fat suppression sequences, active shimming can be used to reduce magnetic field inhomogeneities which are inversely related to image quality and cause image artifact. Active shimming improves image quality by optimizing the homogeneity on an individual patient basis to optimize the final shimming and directly, the resulting image quality. |
| 5420 | DWI of liver using combination of sub-sampling and dual shots without dedicated multi-channel abdomen coil- A CT like patient positioning | |
| Sajith Rajamani1, Ashok Kumar Reddy1, Nitin Jain1, Rajdeep Das1, Rajagopalan Sundaresan1, Jeremy Heinlein2, Harsh Kumar Agarwal1, Arnaud Guidon2, Sudhir Ramanna1, and Ramesh Venkatesan1 | ||
1GE Healthcare, Bangalore, India, 2GE Healthcare, Milwauke, WI, United States |
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DWI is an important sequence for the diagnosis of liver lesions and to monitor the treatment response in patients undergoing therapies for hepatic malignancies [1]. But it is difficult to place the anterior abdomen coil for obese patients in non-wide bore MRI systems because of a potential chance of pinching the coil between patient and the bore. This is a limiting factor for the adoption of liver DWI MRI in clinical practice [2]. As a solution, we are proposing Dual Shots DWI with under-sampling across shots using volume coil located inside the magnet. |
| 5421 | Characteristics of brain white matter network in adolescent patients with first-episode non-suicidal self-injury | |
| Yuwei Chen1 and Nian Liu1 | ||
1North Sichuan Medical College, Nanchong, China |
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Objective: Explore the characteristics of brain white matter network in non-suicidal self-injury patients. Methods: The diffusion tensor imaging were prospectively collected form 30 adolescent patients with NSSI. The data was processed by software. Two independent sample t-test and partial correlation analysis were used to compare network metrics and clinical symptoms. Results: There was no significant difference in global network metrics, but there were significant differences in nodal network metrics, including nodal efficiency, nodal degree centrality and nodal shortest path length (all P＜0.05). Conclusion: These finding provide new insights into the neural circuit mechanism of adolescent NSSI patients. |
| 5422 | Correlation between body fat distribution characteristics and human body parameters based on magnetic resonance imaging | |
| YuLong Qi1, GuanXun Cheng2, and ChuanLi Cheng3 | ||
1Medical Imaging Department, Peking University ShenZhen Hospital, ShenZhen, China, 2Peking University ShenZhen Hospital, ShenZhen, China, 3Shenzhen Institutes of Advanced Technology(SIAT), ShenZhen, China |
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The study explores the correlation between fat distribution characteristics and traditional anthropometric indexes.37 volunteers were scanned with whole-body transverse MR PDFF(Proton Density Fat Fraction) images, covering from neck to knee.In the fat distribution characteristics based on magnetic resonance whole-body imaging, only the proportion of whole-body fat volume showed moderate correlation with traditional ergonomic indexes, and other indexes had low correlation with ergonomic indexes.the correlation between the whole-body fat distribution characteristics based on PDFF image and body mass index (BMI) ,waist to hip ratio (WHR) was analyzed. Different from the anthropometric indexes, the distribution characteristics of body fat show great differences between sexes. |
| 5423 | Investigation of mental state of patients after an examination in an MRI room with LED-backlight photoprints | |
| Hiroyuki Hoshiko1, Masaaki Ninomiya1, Akiyoshi Yamamoto1, Seigo Yoshida1, and Katsumi Nakamura1 | ||
1Tobata Kyouritsu Hospital, Kitakyusyu,Fukuoka, Japan |
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We investigated the psychological state of patients in an MRI examination room equipped with LED-backlit photoprints (SKY LIGHT). We surveyed patients who had completed their examinations in the room about their impressions of the room. The patients' responses were categorized into three types based on their words: positive, negative, and indifferent, and the percentages were calculated. 74.5% of the patients had positive impressions of the rooms after the examination. In conclusion, the results suggest that MRI rooms with SKY LIGHT can give positive impressions to patients. |
| 5424 | Incidence of Meniscal tears associated with osteoarthritis on MRI Knee joint: MMI Hospital Karachi. | |
| ABDUL QAYOOM RAKHSHANI1 and Uzama Azmat2 | ||
1RADIOLOGY۔ MRI, DOW UNIVERSITY OF HEALTH SCIENCES KARACHI, Karachi, Pakistan, 2Radiology, MMI Karachi, Karachi, Pakistan |
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To assess the yield of Incidence of Meniscal tears and associated with osteoarthritis on MRI Knee joint non-contrast enhanced. A cross Sectional study was conducted at department of Radiology MRI Section MMI HOSPITAL Karachi. From January 2019 to February 2020. All patients came for MRI Examination; we assess MRI Knee Joints Non-Contrast Enhanced for Association of meniscal tears with Osteoarthritis on Knee Joints. The data was analyzed for demographic characteristics, referring clinician and Site, Grade and type of tears with final diagnosis. |
| 5425 | Metabolic Tumor Volume prediction by using Hand Craft Fuzzy Rule Base System (FRBS) on Simultaneous PET/MRI | |
| Pradeep Singh Negi1,2, Shashi Bhushan Mehta1,2, and Amarnath Jena1,2 | ||
1Department of Molecular Imaging and Nuclear Medicine, PET SUITE: Indraprastha Apollo Hospitals and House of Diagnostics, Delhi, India, 2Department of Physics, Vivekananda Global University, Jaipur, India |
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18F-FDG PET/MRI can be helpful for diagnosing, staging, restaging, and assessing the post therapeutic response in breast cancer patients. Metabolic tumor volume (MTV) may be more reliable but volumetric assessments of FDG PET needs correct tumor segmentation. We have proposed hand craft fuzzy rule base system to improve tumor volume by using simultaneous PET/MRI for accurate MTV estimation. Four breast cancer patients underwent FDG PET/MRI for staging purpose. Pathological tumor volume was compared with MRI volume, Ktrans volume and MTV computed by hand craft fuzzy rule and the results showed fuzzified tumor volume were more accurate compared with other volumes. |
| 5426 | Clinical feasibility study of AI accelerateed STAGE | |
| Yang Sun1 | ||
1First Hospital of Jilin University, ChangChun, China |
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Clinical feasibility study of AI accelerateed STAGE |
| 5427 | Reducing contrast agents’ residuals in hospital wastewater: the GREENWATER study | |
| Moreno Zanardo1, Luigi Asmundo1, Davide Capra2, Anna Colarieti3, Andrea Cozzi4, Massimo Cressoni4, Veronica Magni1, Caterina Beatrice Monti2, and Francesco Sardanelli5 | ||
1Università degli Studi di Milano, Milano, Italy, 2Università degli Studi di Milano, Milan, Italy, 3IRCCS Policliico San Donato, Milano, Italy, 4IRCCS Policlinico San Donato, Milano, Italy, 5Università degli Studi di Milano - IRCCS Policlinico San Donato, Milan, Italy |
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In order to provide preliminary data about the potential reduction of contrast agents’ residuals in hospital wastewater and to estimate contrast agent excretion in the first hour after administration, the GREENWATER study aims to prospectively monitor over a 12-months timeframe the quantity of retrievable ICAs and GBCAs from urine collected from outpatients within an hour from contrast agent administration, also evaluating the influence of patient age and sex and the overall rate of acceptance to participate to the study. Our current purpose is to provide a first glance on this initial experience. |
| 5428 | The Quantitative Evaluation of Mild Traumatic Brain Injury with DSI and DTI MR Technology | |
| JinRui Zhang1 | ||
1Chongqing Emergency Medical Center, Chongqing, China |
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Compared with DTI (diffusion tensor imaging), DSI(diffusion spectrum imaging) has more accurate spatial resolution ability in mTBI(mild traumatic brain injury), and DSI-based fiber tracking technology has become an important tool for medium scale (mesocale) structural elucidation, building a bridge between microscopic and macroscopic scales, which provides the possibility for further exploration and integration of multi-scale analytical studies at the cellular level as well as at the subcellular level. |